Donnie Wahlberg is hanging with Rach today – and he's revealing what he's planned for Valentine's Day with Jenny McCarthy! Plus, he's spilling the beans on one of his most embarrassing dates. Then, we've got "Top Chef" judge Gail Simmons is serving up the perfect sweet treat for your Valentine (it involves butterscotch!), and design pro John Gidding tackles three couples' home décor challenges. And Rach and her hubby, John, are cooking Seafood Stuffed Shells (with vodka sauce) for date night!

Dr. Travis Stork is in the house, breaking down common diet terms (what ARE calories anyway?) and serving up a metabolism-boosting yogurt dip. And Rach is hanging with the great Kate Walsh, who's chatting about her new Netflix show, "The Umbrella Academy." Plus, Rach serves up a meat sauce made with bacon!